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http://hdl.handle.net/20.500.12386/29207
Titolo: | A planetesimal orbiting within the debris disc around a white dwarf star | Autori: | Manser, Christopher J. Gänsicke, Boris T. Eggl, Siegfried Hollands, Mark Izquierdo, Paula Koester, Detlev Landstreet, John D. Lyra, Wladimir Marsh, Thomas R. Meru, Farzana Mustill, Alexander J. Rodríguez-Gil, Pablo Toloza, Odette Veras, Dimitri Wilson, David J. Burleigh, Matthew R. Davies, Melvyn B. Farihi, Jay Gentile Fusillo, Nicola DE MARTINO, Domitilla Parsons, Steven G. Quirrenbach, Andreas Raddi, Roberto Reffert, Sabine DEL SANTO, MELANIA Schreiber, Matthias R. SILVOTTI, Roberto Toonen, Silvia Villaver, Eva Wyatt, Mark Xu, Siyi Portegies Zwart, Simon |
Data pubblicazione: | 2019 | Rivista: | SCIENCE | Numero: | 364 | Fascicolo: | 6435 | Da pagina:: | 66 | Abstract: | Many white dwarf stars show signs of having accreted smaller bodies, implying that they may host planetary systems. A small number of these systems contain gaseous debris discs, visible through emission lines. We report a stable 123.4-minute periodic variation in the strength and shape of the Ca II emission line profiles originating from the debris disc around the white dwarf SDSS J122859.93+104032.9. We interpret this short-period signal as the signature of a solid-body planetesimal held together by its internal strength. | URI: | http://hdl.handle.net/20.500.12386/29207 | URL: | https://science.sciencemag.org/content/364/6435/66 https://arxiv.org/pdf/1904.02163.pdf |
ISSN: | 0036-8075 | DOI: | 10.1126/science.aat5330 | Bibcode ADS: | 2019Sci...364...66M | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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